HYDROCARBON REDUCTIONS THROUGH PRECOMBUSTION CHAMBER DESIGN IN A NATURAL GAS LEAN BURN ENGINE. TOPICAL REPORT, FEBRUARY-OCTOBER 1990

A study was conducted to evaluate the effects of various precombustion chamber design, operating, and control parameters on the exhaust emissions of natural gas research engine. Analysis of the results showed that engine-out total hydrocarbons and oxides of nitrogen can be reduced, relative to conventional methods, through precombustion chamber design. More specifically, a novel staged prechamber yielded significant reductions in NOx and total hydrocarbon emissions by promoting stable ignition while operating with a high percentage of theoretical excess air. Relatively light load and fuel lean operation with the Staged Prechamber simultaneously reduced baseline NOx and hydrocarbons by 47% and 14%, respectively. Emissions reductions were realized at other loads and air/fuel ratios to lesser exteents. The purpose of the report is to identify and explain positive and deleterious effects of natural gas prechamber design on exhaust emissions.

  • Corporate Authors:

    Southwest Research Institute

    6220 Culebra Road, P.O. Drawer 28510
    San Antonio, TX  United States  78228-0510
  • Authors:
    • Crane, M
  • Publication Date: 1991-9

Media Info

  • Pagination: 104 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00623170
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: SWRI-3178-2-1, GETA-91-08, GRI-91/0237
  • Files: TRIS
  • Created Date: Jul 31 1992 12:00AM